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/*
* columns.c - This file contains logic for drawing columns.
*/
#include <string.h>
#include <stdio.h>
#include <time.h>
#include <sys/stat.h>
#include "columns.h"
#include "entry.h"
#define E_ISDIR(e) (S_ISDIR(S_ISLNK((e)->info.st_mode) ? (e)->linkedmode : (e)->info.st_mode))
static void lpad(char *buf, int width)
{
int len = strlen(buf);
if (len < width) {
int pad = width - len;
memmove(&buf[pad], buf, (size_t)len + 1);
while (pad > 0) buf[--pad] = ' ';
}
}
static char* stpcpy_escaped(char *buf, const char *str, const char *color)
{
static const char *escapes = " abtnvfr e";
for (const char *c = str; *c; ++c) {
if (*c > 0 && *c <= '\x1b' && escapes[(int)*c] != ' ') { // "\n", etc.
buf += sprintf(buf, "\033[31m\\%c%s", escapes[(int)*c], color);
} else if (*c >= 0 && !(' ' <= *c && *c <= '~')) { // "\x02", etc.
buf += sprintf(buf, "\033[31m\\x%02X%s", *c, color);
} else {
*(buf++) = *c;
}
}
*buf = '\0';
return buf;
}
static void timeago(char *buf, time_t t)
{
const int SECOND = 1;
const int MINUTE = 60 * SECOND;
const int HOUR = 60 * MINUTE;
const int DAY = 24 * HOUR;
const int MONTH = 30 * DAY;
const int YEAR = 365 * DAY;
time_t now = time(0);
double delta = difftime(now, t);
if (delta < 1.5)
sprintf(buf, "a second");
else if (delta < 1 * MINUTE)
sprintf(buf, "%d seconds", (int)delta);
else if (delta < 2 * MINUTE)
sprintf(buf, "a minute");
else if (delta < 1 * HOUR)
sprintf(buf, "%d minutes", (int)delta/MINUTE);
else if (delta < 2 * HOUR)
sprintf(buf, "an hour");
else if (delta < 1 * DAY)
sprintf(buf, "%d hours", (int)delta/HOUR);
else if (delta < 2 * DAY)
sprintf(buf, "yesterday");
else if (delta < 1 * MONTH)
sprintf(buf, "%d days", (int)delta/DAY);
else if (delta < 2 * MONTH)
sprintf(buf, "a month");
else if (delta < 1 * YEAR)
sprintf(buf, "%d months", (int)delta/MONTH);
else if (delta < 2 * YEAR)
sprintf(buf, "a year");
else
sprintf(buf, "%d years", (int)delta/YEAR);
}
void col_mreltime(entry_t *entry, const char *color, char *buf, int width) {
(void)color;
timeago(buf, entry->info.st_mtime);
lpad(buf, width);
}
void col_areltime(entry_t *entry, const char *color, char *buf, int width) {
(void)color;
timeago(buf, entry->info.st_atime);
lpad(buf, width);
}
void col_creltime(entry_t *entry, const char *color, char *buf, int width) {
(void)color;
timeago(buf, entry->info.st_ctime);
lpad(buf, width);
}
void col_mtime(entry_t *entry, const char *color, char *buf, int width) {
(void)color;
strftime(buf, (size_t)width, TIME_FMT, localtime(&(entry->info.st_mtime)));
}
void col_atime(entry_t *entry, const char *color, char *buf, int width) {
(void)color;
strftime(buf, (size_t)width, TIME_FMT, localtime(&(entry->info.st_atime)));
}
void col_ctime(entry_t *entry, const char *color, char *buf, int width) {
(void)color;
strftime(buf, (size_t)width, TIME_FMT, localtime(&(entry->info.st_ctime)));
}
void col_selected(entry_t *entry, const char *color, char *buf, int width) {
(void)width;
buf = stpcpy(buf, IS_SELECTED(entry) ? SELECTED_INDICATOR : NOT_SELECTED_INDICATOR);
buf = stpcpy(buf, color);
}
void col_perm(entry_t *entry, const char *color, char *buf, int width) {
(void)color; (void)width;
sprintf(buf, " %03o", entry->info.st_mode & 0777);
}
void col_random(entry_t *entry, const char *color, char *buf, int width)
{
(void)color;
sprintf(buf, "%*d", width, entry->shufflepos);
}
void col_size(entry_t *entry, const char *color, char *buf, int width)
{
(void)color; (void)width;
int j = 0;
const char* units = "BKMGTPEZY";
double bytes = (double)entry->info.st_size;
while (bytes > 1024) {
bytes /= 1024;
j++;
}
sprintf(buf, " %6.*f%c ", j > 0 ? 1 : 0, bytes, units[j]);
}
void col_name(entry_t *entry, const char *color, char *buf, int width)
{
(void)width;
if (entry->no_esc) buf = stpcpy(buf, entry->name);
else buf = stpcpy_escaped(buf, entry->name, color);
if (E_ISDIR(entry)) buf = stpcpy(buf, "/");
if (!entry->linkname) return;
buf = stpcpy(buf, "\033[2m -> \033[3m");
buf = stpcpy(buf, color);
if (entry->link_no_esc) buf = stpcpy(buf, entry->linkname);
else buf = stpcpy_escaped(buf, entry->linkname, color);
if (S_ISDIR(entry->linkedmode))
buf = stpcpy(buf, "/");
buf = stpcpy(buf, "\033[22;23m");
}
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